Mild,
Ameda usually can buy at Robinsons. But this time round Taka baby fair also selling (but if not wrong normally Taka doesn't sell). If you want to buy at Robinson's wait for bundled offers.
I dunnoe about Medela PIS, but their normal electric pump very loud, like grasscutter like that, LOL. But heard that the PIS is very good. Avent Uno is very lousy, no power. But maybe the Duo is different story - it'd better be actually because they charge the earth for it. ??!!?!!?!?!?!!